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casjxm

铜虫 (正式写手)

[交流] 我对VASP中outcar文件的一点感觉 已有3人参与

以前用过abinit,前段时间转向vasp,发现outcar文件有几点缺憾,1.怎么就没有给出空间群呢,这么重要的信息居然就是不给,还动不动出来Got some problem with cell dimensions警告,不知道是不是vasp在对称性识别上有不足.2. outcar文件真的可以不用那么长的,啰嗦,不同k,不同能级的能量最好是在必要时才全部输出,大多数是没必要都输出的。这两点比abinit缺少人情味。
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huangll99

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fzx2008: 金币+2, 谢谢指教 2012-05-28 17:28:00
为啥俺的OUTCAR就有呢
  LATTYP: Found a hexagonal cell.
ALAT       =     2.7132352009
C/A-ratio  =     1.6241978657
  
  Lattice vectors:
  
A1 = (   2.7132352009,   0.0000000000,   0.0000000000)
A2 = (  -1.3566176005,   2.3497306104,   0.0000000000)
A3 = (   0.0000000000,   0.0000000000,   4.4068308224)
Subroutine PRICEL returns:
Original cell was already a primitive cell.


Analysis of symmetry for initial positions (statically):

Routine SETGRP: Setting up the symmetry group for a
hexagonal supercell.


Subroutine GETGRP returns: Found 12 space group operations
(whereof  6 operations were pure point group operations)
out of a pool of 24 trial point group operations.


The static configuration has the point symmetry C_3v.
The point group associated with its full space group is C_6v.

Analysis of symmetry for dynamics (positions and initial velocities):

Subroutine DYNSYM returns: Found 12 space group operations
(whereof  6 operations were pure point group operations)
out of a pool of 12 trial space group operations
(whereof  6 operations were pure point group operations)
and found also     1 'primitive' translations


The dynamic configuration has the point symmetry C_3v.
The point group associated with its full space group is C_6v.
2楼2012-05-28 12:59:44
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iamikaruk

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fzx2008: 金币+2, 谢谢交流! 2012-05-28 17:28:07
感觉abinit在对称性上比vasp是要好一些
比如输出的Born有效电荷张量
[img]http://osu.ppy.sh/stat2/iamikaruk-0.png[/img]
3楼2012-05-28 13:09:33
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casjxm

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引用回帖:
2楼: Originally posted by huangll99 at 2012-05-28 12:59:44
为啥俺的OUTCAR就有呢
  LATTYP: Found a hexagonal cell.
ALAT       =     2.7132352009
C/A-ratio  =     1.6241978657
  
  Lattice vectors:
  
A1 = (   2.7132352009,   0.0000000000,   0.0 ...

只给了点群
4楼2012-05-28 14:39:50
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casjxm

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引用回帖:
3楼: Originally posted by iamikaruk at 2012-05-28 13:09:33
感觉abinit在对称性上比vasp是要好一些
比如输出的Born有效电荷张量

我觉得也是这样
5楼2012-05-28 14:40:37
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huangll99

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引用回帖:
4楼: Originally posted by casjxm at 2012-05-28 14:39:50
只给了点群...

俺错了
6楼2012-05-28 15:12:02
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wanghouyuan

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这些应该都是可以控制输出的吧
子弹
7楼2012-05-28 16:09:44
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casjxm

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引用回帖:
7楼: Originally posted by wanghouyuan at 2012-05-28 16:09:44
这些应该都是可以控制输出的吧

是哪个参数呢,
8楼2012-05-28 16:53:13
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wanghouyuan

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不好意思,我也是刚入门
子弹
9楼2012-05-28 17:14:52
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